.mui-datepicker-header {
  box-sizing: content-box;
  display: block;
  height: 30px;
  padding: 11px 18px 6px;
  cursor: default;
  user-select: none;
  &:after {
    content: '';
    display: block;
    width: 100%;
    height: 0;
    clear: both;
  }

  button {
    background-color: transparent;
    border: none;
    font-size: 15px;
    line-height: 20px;
    padding: 5px 4px;
    outline: none;
    &:active {
      background-color: #f5f5f5;
    }
  }

  & > .time {
    float: left;
    & > button {
      vertical-align: middle;
      cursor: pointer;
      font-weight: bold;
    }
    & > span {
      display: inline-block;
      font-size: 15px;
      line-height: 30px;
      vertical-align: middle;
      &.year {
        font-weight: bold;
      }
    }
  }

  & > .pager {
    float: right;
    & > button {
      vertical-align: middle;
      box-sizing: border-box;
      width: 30px;
      outline: none;
      color: #757575;
      cursor: pointer;
      &.prev,
      &.next {
        font-size: 18px;
      }
      &.now {
        font-size: 12px;
      }
    }
  }
}
